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Sulte <br /> Sequoia 819 acres Avenue 958 8 <br /> Sacramento CA 95834 <br /> 4D (916)921-9600 <br /> Analytical fw equaalabsc00 <br /> www sequoialabs coni <br /> 71680 <br /> aine Tech Services,Inc Project Equiva,2575 Country Club, Stockton,CA <br /> Rogers Avenue ProjectNumber 010412-J1 Reported <br /> n Jose CA,95112-1105 Project Manager Nick Sudano 05/01/01 11 21 <br /> Total Purgeable Hydrocarbons (C&C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> [Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1040255-EPA 5030B(PIT) <br /> Blank(1040255-BLK1) _ Prepared A&Analyzed 04/19/01 _ <br /> Purgeable Hydrocarbons ND 500 ug/1 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate a a a-Triuorotoluene 962 100 962 60-140 <br /> LCS(1040255-BSI) _ __ Prepared_ &_Analyzed 04/1910) <br /> Benzene 737 0 500 ug/1 100 737 70-130 <br /> Toluene 864 0 500 100 864 70-130 <br /> benzene 9 38 0 500 „ 100 938 70-130 <br /> es(total) 290 0 500 300 967 70-130 <br /> Methyl tert-butyl ether 834 250 100 83 4 70-130 <br /> Surrogate a a a-Trifluorotoluene 9 77 100 977 60-140 <br /> Matrix Spike(1040255-MSI) _ Source S10_4202-22 -Prepared&Analyz_ed 04/19/01 <br /> Benzene 832 0 500 ug/I 100 ND 83 2 60-140 <br /> Toluene 846 0 500 too ND 84 6 60-140 <br /> Ethylbenzene 8 71 0 500 too ND 87 1 60-140 <br /> Xylenes(total) 266 0 500 300 ND 887 60-140 <br /> Methyl tert-butyl ether 6 64 250 100 ND 664 60-140 <br /> Surrogate a aa-Trruorotoluene 899 100 899 60-140 <br /> Matrix Spike Dup(1040255-MSD1) Source S104202-22 Prepared&Analyzed 04/19/01 <br /> Benzene 9 88 0 500 ug/1 ]Go ND 98 8 60-140 171 25 <br /> Toluene 996 0 500 too ND 996 60-140 163 25 <br /> Ethylbenzene 101 0 500 100 ND 101 60-140 14 8 25 <br /> Xylenes(total) 31 1 0 500 300 ND 104 60-140 15 6 25 <br /> Methyl tert-butyl ether It 1 2 50 Wo ND 11] 60-I40 503 25 Q-08 <br /> Surrogate a a a-Trifluorotoluene 952 100 95 2 60-140 <br /> uoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its enitrety <br /> Page 20 of 25 <br />